I am going to be abroad for a few months and I'm wondering what would be a good one to get. The notebooks I see are pretty powerful and come with a Windows 7 upgrade. But I suppose I would be mostly interested in email and surfing. Would Skype work on a netbook? Would I want an external DVD drive for the netbook? I'm going to be carrying stuff in my backpack. It seems like the weight difference is 2-3 lb. vs. 6-7 lb. I guess I am looking at Costco for netbooks like Acer or HP and Bestbuy for notebooks.